mdbx-build: start using CMake (incomplete; no properly installation for now).

.gitignore

@@ -12,15 +12,11 @@
 .idea
 .le.ini
 .vs/
-Win32/
-build-*
 cmake-build-*
+@*
 core
 example
 libmdbx.creator.user
-mdbx-dll.VC.VC.opendb
-mdbx-dll.VC.db
-mdbx-dll.vcxproj.filters
 mdbx_chk
 mdbx_copy
 mdbx_dump
@@ -28,11 +24,9 @@ mdbx_load
 mdbx_stat
 mdbx_test
 test.log
-test/test.vcxproj.user
 test/tmp.db
 test/tmp.db-lck
 tmp.db
 tmp.db-lck
 valgrind.*
-x64/
-x86/
+version.c