keep2share (download, probe): fix file name parsing
zippyshare (download): fix, upstream change

Fixes issue 1157
captchacoin: new captcha recognition system
core.sh (parse, parse_all): add error message when offset ($3) is non zero and filter regexp ($1) is unspecified
core.sh (log_report_info): improvements

Changes:
- don't call $(uname -a) anymore, use bash internal variables
- detect several installations of plowshare
turbobit (download, probe): fix detection of dead files

Regression introduced in 131c465ee26419c1f9ebb894bf3f8550cfb5aa33
Fixes issue 1158
captchacoin: update docs & completion
empty keyboard buffer before asking input
Merge branch 'master' into luckyshare