Fixed Linux client build
Merge branch 'feature-quota' of http://127.0.0.1/git/urbackup_backend into feature-quota

Conflicts:
	urbackupclient/client.h
Merged
Merge branch 'feature-quota' of http://127.0.0.1/git/urbackup_backend into feature-quota
Merge branch 'feature-quota' of http://127.0.0.1/git/urbackup_backend into feature-quota
Authentication for image restores (fix)
Authentication for image restores (fix)
Authentication for image restores (fix)
Look in the right directory for the signature file for client download verification.
Added client name to download file name
Do not wait before connecting if internet test mode is active
Properly timeout client if database is busy
Merge branch 'next' of ssh://git.code.sf.net/p/urbackup/backend into next

Conflicts:
	urbackupclient/InternetClient.cpp
Freeze list of open files being written to during shadow copying
Wait after freezing list of open files being written to
Read proxy settings from http_proxy variable, if set
Separate settings for client download and update
Use backup semantics to read files for end-to-end checksum verification and client-side checksum calculation
Merge remote-tracking branch 'urpc/feature-quota' into next
Try to work around issue where last modified dates of files are not changed, if the file is changed via memory mapping