pkg: merge low-level scrubbing from master

+POST_INSTALL

@@ -21,12 +21,11 @@ EOF
 cat /etc/rc.bak >> /etc/rc
 rm -f /etc/rc.bak
 
-echo "Writing package version"
+echo "Writing package metadata"
 mkdir -p /usr/local/opnsense/version
 if [ -f /usr/local/opnsense/version/opnsense ]; then
 	mv /usr/local/opnsense/version/opnsense /usr/local/opnsense/version/opnsense.last
 fi
-
 echo "%%CORE_COMMIT%%" > /usr/local/opnsense/version/opnsense
 echo "%%CORE_NAME%%" > /usr/local/opnsense/version/opnsense.name
 echo "%%CORE_ABI%%" > /usr/local/opnsense/version/opnsense.abi

.gitignore

-/src/etc/pkg.conf
-/src/etc/pkg/**
-/src/etc/ssh/**
-/src/etc/php/**
-/src/etc/php.ini
-/src/lib/**
 *.DS_Store
 *.codekit
+*.mo
+*.pyc
 *.sass-cache
 *.volt.php
-*.pyc
-*.mo
+/src/etc/php.ini
+/src/etc/php/**
+/src/etc/pkg.conf
+/src/etc/pkg/**
+/src/etc/ssh/**
+/src/lib/**
+/src/opnsense/changelog