Remove left-over debug lines.

Remove two lines of code that were commented out and are definitely not used.

Check paths sanity before they get used.

Don't use the PATHs before they get checked for sanity.

Better check for spaces in paths

Spaces are evil in paths. Print the path that contains a sapce.
Don't print computed paths, as they'rebased on provided paths,
and don't get space added into them.

[functions] Allow newlines (\n) in log messages

Allow caller to log messages with embedded newlines when calling
CT_DoLog and other logging functions (eg. CT_Abort...).

[finish-step] Fix the tools wrappers

Use the correct variable when iterating upon the tools
name to correctly link the tools to the wrapper.

Add .hgignore file.

List all generated or temp files in .hgignore, so they
don't clutter the screen when running hg status.

Merge the gcc-4.4 support.

[gcc] Merge the gcc-4.4 suport to the default branch, from 1407:83083566fdd0

[configure] Use hg to compute the version string

Now that we have migrated to hg from svn, it does not make sense
to keep using svn tools to compute the version string, so switch
to using mercurial tools (that are much more flexible, BTW).

[finish-step] Use local variable in finish-step

When wrapping the tools, use a local variable when iterating.