* mingw-w64-perl/PKGBUILD: use consistently _realname (removes an inconsistency mixing _name and _realname)
* mingw-w64-snappy/PKGBUILD: minor whitespace change: use curly brackets around MINGW_PACKAGE_PREFIX variable, like most PKGCONFIGs have
* fixed or simplified some depends, makedepends and provides in mingw-w64-LibRaw, mingw-w64-msmtp, mingw-w64-python-binwalk, mingw-w64-webkitgtk2 and mingw-w64-wxWidgets
* upgrade some broken packages
* correct some broken urls/checksums
* use secure urls where possible
* update PKGBUILD templates
* remove line-ending whitespace
* minor typos/fixes
Remaining md5sums either didn't download or
didn't pass checksum tests.