Basic garbage collection support
Added gc command to usage information

Signed-off-by: Gleb Golubitsky <sectoid@gnolltech.org>
Merge used chunks into single index instead of making new chunks for each used

Signed-off-by: Gleb Golubitsky <sectoid@gnolltech.org>
Removing empty directories in bundles after performing garbage collection

Signed-off-by: Gleb Golubitsky <sectoid@gnolltech.org>
fixing typo in the usage help message

Signed-off-by: Gleb Golubitsky <sectoid@gnolltech.org>
gitignoring cmake's and protobuf's trash

Signed-off-by: Gleb Golubitsky <sectoid@gnolltech.org>
refactoring to eject gc code from ZRestore and make world a bit better place

Signed-off-by: Gleb Golubitsky <sectoid@gnolltech.org>
dropping away unneeded threads param in ZRestore

Signed-off-by: Gleb Golubitsky <sectoid@gnolltech.org>
Merge pull request #20 from Sectoid/gc-impl

Basic garbage collection support (updated)