Fix and clean up a few minor packaging issues

- Manually extract sources to separate directory to avoid polluting
  package with unrelated files when copying over files from $srcdir to
  $pkgdir
- Move some static files created in PKGBUILD out to separate files
  (openmpt launch script, bash completion script, x-mptm.xml)
- Other miscellaneous style changes

This bumps pkgrel up to 2 for the above changes. Theis package should be
functionally equivalent otherwise.

1 files changed, 3 insertions, 0 deletions

diff --git a/openmpt b/openmpt
new file mode 100755
index 000000000000..33ed46a2ab24
--- /dev/null
+++ b/openmpt
@@ -0,0 +1,3 @@
+#!/bin/bash
+[[ "$1" == "" ]] && wine /usr/share/openmpt/OpenMPT.exe
+[[ "$1" != "" ]] && wine /usr/share/openmpt/OpenMPT.exe "$(winepath -w "$1")"