Use dedicated -mrelax linker option in the Atmel Studio integration toolchain configurations, rather than a freeform linker switch.

git-svn-id: http://lufa-lib.googlecode.com/svn@2598 d5102386-fcda-11dd-9fdb-3debd5008f28
Clean up Studio Integration cache generation script. Re-indent integration VSIX XML files.

git-svn-id: http://lufa-lib.googlecode.com/svn@2599 d5102386-fcda-11dd-9fdb-3debd5008f28