tcc Makefile tweaks

Created originally on Bitbucket by daniel_fort (Daniel Fort)

Was already merged in Bitbucket before import, marked as merged by the import user

Fix issue with grep 3.0 Windows line endings in a text file as seen as a binary file. Changed multi-line grep commands to single line extended regular expression. "make clean" removes localsyms file. Nit picky grammar fix in comment.

http://www.magiclantern.fm/forum/index.php?topic=15894.msg185329#msg185329