Adjust Lua paths

Load lua modules from the plugin config directory. Closes #77

src/SciTE/LuaExtension.cpp

@@ -1626,6 +1626,14 @@ static bool InitGlobalScope() {
 	// "onlyFuncs" is used to get only functions when a ':' is typed since it
 	// can only access functions
 	luaL_dostring(luaState, R"(
+local function PackagePaths()
+	local md = npp:GetPluginsConfigDir() .. [[\LuaScriptLibs\]]
+	local cp = md.."?.dll;"..md.."?\\loadall.dll"
+	local lp = md.."lua\\?.lua;"..md.."lua\\?\\init.lua;"..md.."?.lua;"..md.."?\\init.lua"
+	return lp, cp
+end
+package.path, package.cpath = PackagePaths()
+
 function GetAutoComplete(object, onlyFuncs)
 	local function GetKeys(tbl, list, onlyFuncs)
 		if type(tbl) == "table" then

src/lua/src/luaconf.h

@@ -185,14 +185,9 @@
 ** In Windows, any exclamation mark ('!') in the path is replaced by the
 ** path of the directory of the executable file of the current process.
 */
-#define LUA_LSDIR   "!\\plugins\\LuaScript\\"
-#define LUA_CDIR    LUA_LSDIR"lib\\"
-#define LUA_LDIR    LUA_CDIR"lua\\"
-#define LUA_PATH_DEFAULT  \
-    LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
-    LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua"
-#define LUA_CPATH_DEFAULT \
-    LUA_CDIR"?.dll;"  LUA_CDIR"?\\loadall.dll"
+
+#define LUA_PATH_DEFAULT ""
+#define LUA_CPATH_DEFAULT ""
 
 #else			/* }{ */