[Guidelines Change] Changes to the Packaging Guidelines

Here is the latest set of changes to the Fedora Packaging Guidelines:

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In Fedora, you can assume that the default shell (/bin/sh) is bash.
Thus, all scriptlets can safely assume that if they are running in shell
code, they are running within bash.

https://fedoraproject.org/wiki/Packaging:ScriptletSnippets#Default_Shell

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A bundling exception was granted for calibre to bundle their forked
version of pyPdf.

https://fedoraproject.org/wiki/Packaging:No_Bundled_Libraries#Packages_granted_exceptions

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A new set of MinGW guidelines are in place for Fedora 17+. These
guidelines reflect the existence of mingw32 and mingw64.

https://fedoraproject.org/wiki/Packaging:MinGW

Older guidelines remain in place for older versions of Fedora (and RHEL
6 or older):

https://fedoraproject.org/wiki/Packaging:MinGW_Old

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