devel/got: update to 0.49

User-visible changes:

• implicitly mark all files in work tree as up-to-date after 'got integrate'
• tog: fix behaviour if 'n' is pressed before search is started
• in 'got clone', allow -l together with -q, for consistency with 'got fetch'
• add 'got commit -F' option to commit with a log message stored in a file
• tolerate tag objects which lack tagger timestamp information
• include remote branches in the output of 'got branch -l'