automatically enter $SOURCE_DIRECTORY after default_pre_build

It is annoying to manually do this cd in _every_ PRE_BUILD file
Merge pull request #48 from v4hn/default_pre_build-cd

automatically enter $SOURCE_DIRECTORY after default_pre_build
Merge pull request #49 from stumbles/master

Updated mirrors list for KDE taken from their official mirrors list; http://download.kde.org/extra/mirrors.html
Merge pull request #50 from stumbles/master

GNU mirror update.
Added a few .cache files to the exclude list
Held modules are never expired.
Merge pull request #51 from cavalier38/held-not-expired

Held modules are never expired.
Added glibc symlinks to protected.
Configurable xz compression
Added lin -g as sort for --download.
Merge pull request #54 from cavalier38/lin-g

Added lin -g as sort for --download.
Place default COMPRESS_METHOD in /etc/lunar/config.
Merge pull request #53 from cavalier38/xz-optional

Configurable xz compression
Version 10
Getopt now properly check -g (download) option
Merge pull request #52 from cavalier38/protect-glibc

Added glibc symlinks to protected.
Don't perform sanity checks on fhs.
always use wget progress bar style
Merge pull request #57 from cavalier38/fhs

Don't perform sanity checks on fhs.
Merge pull request #58 from cavalier38/download-progress3

always use wget progress bar style