Convert builtin help to reStructuredText source files

Run the convert-help.bash script to convert documentation:

 ./convert-help.bash "/path/to/CMake-build/bin"

Then remove it.

Help/generator/CodeBlocks - Ninja.rst

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+CodeBlocks - Ninja
+------------------
+
+Generates CodeBlocks project files.
+
+Project files for CodeBlocks will be created in the top directory and
+in every subdirectory which features a CMakeLists.txt file containing
+a PROJECT() call.  Additionally a hierarchy of makefiles is generated
+into the build tree.  The appropriate make program can build the
+project through the default make target.  A "make install" target is
+also provided.

Help/generator/CodeBlocks - Unix Makefiles.rst

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+CodeBlocks - Unix Makefiles
+---------------------------
+
+Generates CodeBlocks project files.
+
+Project files for CodeBlocks will be created in the top directory and
+in every subdirectory which features a CMakeLists.txt file containing
+a PROJECT() call.  Additionally a hierarchy of makefiles is generated
+into the build tree.  The appropriate make program can build the
+project through the default make target.  A "make install" target is
+also provided.

Help/generator/Eclipse CDT4 - Ninja.rst

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+Eclipse CDT4 - Ninja
+--------------------
+
+Generates Eclipse CDT 4.0 project files.
+
+Project files for Eclipse will be created in the top directory.  In
+out of source builds, a linked resource to the top level source
+directory will be created.  Additionally a hierarchy of makefiles is
+generated into the build tree.  The appropriate make program can build
+the project through the default make target.  A "make install" target
+is also provided.

Help/generator/Eclipse CDT4 - Unix Makefiles.rst

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+Eclipse CDT4 - Unix Makefiles
+-----------------------------
+
+Generates Eclipse CDT 4.0 project files.
+
+Project files for Eclipse will be created in the top directory.  In
+out of source builds, a linked resource to the top level source
+directory will be created.  Additionally a hierarchy of makefiles is
+generated into the build tree.  The appropriate make program can build
+the project through the default make target.  A "make install" target
+is also provided.

Help/generator/KDevelop3 - Unix Makefiles.rst

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+KDevelop3 - Unix Makefiles
+--------------------------
+
+Generates KDevelop 3 project files.
+
+Project files for KDevelop 3 will be created in the top directory and
+in every subdirectory which features a CMakeLists.txt file containing
+a PROJECT() call.  If you change the settings using KDevelop cmake
+will try its best to keep your changes when regenerating the project
+files.  Additionally a hierarchy of UNIX makefiles is generated into
+the build tree.  Any standard UNIX-style make program can build the
+project through the default make target.  A "make install" target is
+also provided.

Help/generator/KDevelop3.rst

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+KDevelop3
+---------
+
+Generates KDevelop 3 project files.
+
+Project files for KDevelop 3 will be created in the top directory and
+in every subdirectory which features a CMakeLists.txt file containing
+a PROJECT() call.  If you change the settings using KDevelop cmake
+will try its best to keep your changes when regenerating the project
+files.  Additionally a hierarchy of UNIX makefiles is generated into
+the build tree.  Any standard UNIX-style make program can build the
+project through the default make target.  A "make install" target is
+also provided.

Help/generator/Ninja.rst

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+Ninja
+-----
+
+Generates build.ninja files (experimental).
+
+A build.ninja file is generated into the build tree.  Recent versions
+of the ninja program can build the project through the "all" target.
+An "install" target is also provided.

Help/generator/Sublime Text 2 - Ninja.rst

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+Sublime Text 2 - Ninja
+----------------------
+
+Generates Sublime Text 2 project files.
+
+Project files for Sublime Text 2 will be created in the top directory
+and in every subdirectory which features a CMakeLists.txt file
+containing a PROJECT() call.  Additionally Makefiles (or build.ninja
+files) are generated into the build tree.  The appropriate make
+program can build the project through the default make target.  A
+"make install" target is also provided.

Help/generator/Sublime Text 2 - Unix Makefiles.rst

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+Sublime Text 2 - Unix Makefiles
+-------------------------------
+
+Generates Sublime Text 2 project files.
+
+Project files for Sublime Text 2 will be created in the top directory
+and in every subdirectory which features a CMakeLists.txt file
+containing a PROJECT() call.  Additionally Makefiles (or build.ninja
+files) are generated into the build tree.  The appropriate make
+program can build the project through the default make target.  A
+"make install" target is also provided.

Help/generator/Unix Makefiles.rst

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+Unix Makefiles
+--------------
+
+Generates standard UNIX makefiles.
+
+A hierarchy of UNIX makefiles is generated into the build tree.  Any
+standard UNIX-style make program can build the project through the
+default make target.  A "make install" target is also provided.