Import after Dry Update + Flag FIX

Fix the flag set and unset operations in the repo module + run the import after the dry update if one is not already in progress.

Solves parts of #102 (closed)

inc/lektor/common.h

@@ -62,6 +62,13 @@ extern EXIT_FUNCTION ___not_implemented(const char *func, char *file, int line);
         GOTO_IF(pthread_mutex_unlock(&(lock)), "Failed to unlock", error); \
     }
 
+#define DO_WITH_RELAXED_LOCK(lock, error, instruction)                     \
+    {                                                                      \
+        GOTO_IF(pthread_mutex_unlock(&(lock)), "Failed to unlock", error); \
+        instruction;                                                       \
+        GOTO_IF(pthread_mutex_lock(&(lock)), "Failed to lock", error);     \
+    }
+
 #define STRTOL_ERROR(integer) (errno == ERANGE || (errno != 0 && (integer) == 0))
 #define STRTOL(ret, str, endptr, err_flag)                            \
     {                                                                 \