Fix win32 build

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branch : release-2.x.y
Allan Nordhøy is taking over the Bokmål Norwegian translation

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branch : release-2.x.y
Add Akmal Khushvakov for the Uzbek translation

Again, this is currently an empty .po file.

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branch : release-2.x.y
Add Chandrakant Dhutadmal for three languages

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branch : release-2.x.y
Add KNTRO for Argentine Spanish

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branch : release-2.x.y
win32: switch to the official opensuse mingw32 binaries (from twasilczyk's packages)
Fixed inconsistency in current size for a group when adding a buddy
Switch _purple_conversation_write_common and (writing|wrote)-(chat|im)-msg to PurpleMessage
Conversations: fix glib warnings
Switch write_conv and (displaying|displayed)-(im|chat)-msg to PurpleMessage
Drop finch_write_common in favor of finch_write_conv
Fix writing_msg instances
Use _purple_conversation_write_common for all types of clients
Fix win32 build
Drop PurpleConversationMessage in favor of PurpleMessage
Fill comments for PurpleMessage
Update internal libgadu to 1.12.0

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branch : release-2.x.y
Better check for libgadu GPL compliance, some tidying up

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branch : release-2.x.y
Merge release-2.x.y
Gadu-Gadu: revert things accidentally removed, fix build

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branch : release-2.x.y