Add relative path support for portable drive

[user005]

windows platform.
for usb flash driver.
There are several places where relative paths need to be supported

1,settings - compiler settings - toolchain executables - compiler's installation directory.
2,file - new - (all about project folder).

maybe 'compiler settings' and 'debugger settings' should all support relative paths.

[stahta01]

Read this and see if it still works.

http://wiki.codeblocks.org/index.php/FAQ-Settings#Q:_How_do_I_make_Code::Blocks_portable.3F

Tim S.

[user005]

Read this and see if it still works.

http://wiki.codeblocks.org/index.php/FAQ-Settings#Q:_How_do_I_make_Code::Blocks_portable.3F

Tim S.

thinks.
i  use CbLauncher.exe,
CbLauncher.exe only make the profile file portable.
There are still some absolute paths in the profile file.
Code:Blocks itself does not support relative paths,I think that's the main reason.