Add ARGV.git?
Make git an installer mode
Make quieter an installer mode
Revert "Revert "FormulaInstaller: make mode reader methods private""

This reverts commit c622f27e525de4a9cc9a209a6cc0e26be60b5919.
dovecot 2.2.15
duplicity 0.6.25
ExifTool 9.75
libfixbuf 1.6.1
nasm 2.11.06
nginx --devel 1.7.7
parrot 6.9.0
scamper 20141101
silk 3.9.0
solr 4.10.2
spin 6.4.2

Closes #33854.
dovecot: update 2.2.15 bottle.
duplicity: update 0.6.25 bottle.
exiftool: update 9.75 bottle.
libfixbuf: update 1.6.1 bottle.
nasm: update 2.11.06 bottle.