Fixed CORE-4127: Server crashes instead of reporting the error "key size exceeds implementation restriction".

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/branches/B2_1_Release@58214 65644016-39b1-43b1-bf79-96bc8fe82c15
Fixed CORE-2912 - Exception when upper casing string with lowercase y trema (code 0xFF in ISO8859_1)


git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/branches/B2_1_Release@58222 65644016-39b1-43b1-bf79-96bc8fe82c15