replace llinfos, lldebugs, etc with new LL_INFOS(), LL_DEBUGS(), etc.

EXT-8318 ADDITIONAL FIXED ensure that thousands separator is in utf8 format (on Windows) before converting it to LLWString.

Problem on Windows:
==================

LLPanelMainInventory::updateItemcountText() formats number using viewer locale.
non-break space is detected as unknown symbols while converting utf8str_to_wstring when formatted text is set to LLTextBox.

FIX:
===

Added converting of string to multi-byte string and then to utf8 string while formatting on Windows.
  created opposite to "ll_convert_wide_to_string" function "ll_convert_string_to_wide" and helper function to call both of them.
  It is used now to convert result of formatted string while formatting integer number in locale.

Fix affects Windows only.

Reviewed by Richard Nelson at https://codereview.productengine.com/secondlife/r/775/

--HG--
branch : product-engine

Ok, finally got this to a point where it doesn't break the build and I can check
in. llcommon can be built as a shared library (disabled but can be enabled with
cmake cache var LLCOMMON_LINK_SHARED.

reviewed by Mani on tuesday (I still need to get his suggested changes
re-reviewed)

Result of svn merge -r107256:107258 svn+ssh://svn/svn/user/phoenix/license_2009_merge into trunk. QAR-1165

Result of svn merge -r71162:71205 svn+ssh://svn/svn/linden/branches/new-license into release. only changes files which are not deployed or the comments section of code.

concludes (fixes) SL-31187
pair programmed and reviewed by markl and karen