set dll search path when loading unitsync.dll to the same dir
add async load of unitsync (but don't use it yet)
use enum
add dummy lslextract (disabled as default)
fix
detect spring only automaticly by bundle (will mostly ignore system installed spring)
fix path
duplicate code--
Revert "duplicate code--"

This reverts commit 403390e4cd48ccd8c264df3f431460fa5b4f6fc6.
don't try to set config file path, spring does this quiet well
GetSpringVersion() now always returns the full version (major + patchset)
fix crash: typo
search by unitsync path
refactor spring bundle search
refactor GetSpringVersionList
add searchpath to SpringBundle::AutoComplete()
try to fix compile / cleanup
try to fix compile error with old boost
speedup
safety