util: quicker fspath, do not lower names when the length is different

test-casefolding: fix wrong case on hfs on linux on linux hfs keeps the old case of the file stored force it by renameing to another name and back

hghave: check for case insensitive filesystem in current dir check was done on TEMP

run-tests: expand --tmpdir and create it if needed

patch: remove the unused, broken reverse() function

patch: readgitpatch: remove unused variable 'src'

use 'x in dict' instead of 'dict.has_key(x)' "in" is faster, and has_key will be removed in py3k

churn: use genexps now that we dropped 2.3 compatibility

merge with crew-stable

churn: issue833 was reintroduced in 9bc46d069a76, correct it and add a test

templatefilters: indent: do not compute text.endswith('\n') in each iteration

util: canonpath: simplify logic if root == os.sep, then endswithsep(root) is True as well: one test is enough