Enhance dynamic libraries loading related error messages [CORE5908]

[firebird-issue-importer]

Submitted by: @AlexPeshkoff

Due to wrong initial design of class ModuleLoader errors displayed when loading library fails miss OS-specific information about a reason of a failure (no such file, invalid format, unresolved external reference, etc.), they only say - module/library not loaded. This makes fixing related bugs extremely problematic in many cases.

Errors reported should be extended in order to show exact reason of a failure.

Commits: 6a63c3b 2d973b9

====== Test Details ======

Thanks to Alex for suggestion about implementation.

[firebird-issue-importer]

Modified by: @AlexPeshkoff

assignee: Alexander Peshkov [ alexpeshkoff ]

[firebird-issue-importer]

Commented by: @AlexPeshkoff

Messages are enhanced except deprecated UDFs and unfortunately ICU - in case of failure ICU is attempted to be loaded >50 times and reporting all errors to user is definitely unreal.

[firebird-issue-importer]

Modified by: @AlexPeshkoff

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 4.0 Beta 1 [ 10750 ]

Fix Version: 3.0.4 [ 10863 ]

[firebird-issue-importer]

Modified by: @pavel-zotov

status: Resolved [ 5 ] => Resolved [ 5 ]

QA Status: No test => Cannot be tested

[firebird-issue-importer]

Modified by: @pavel-zotov

status: Resolved [ 5 ] => Closed [ 6 ]

[firebird-issue-importer]

Modified by: @pavel-zotov

status: Closed [ 6 ] => Closed [ 6 ]

QA Status: Cannot be tested => Done successfully

Test Details: Thanks to Alex for suggestion about implementation.