BSolverRepository: Change priority from uint8 to int32

This allows us to specifies priorities below and above the user
definable range.

headers/os/package/solver/SolverRepository.h

@@ -51,8 +51,9 @@ public:
 
 			BString				Name() const;
 
-			uint8				Priority() const;
-			void				SetPriority(uint8 priority);
+			int32				Priority() const;
+			void				SetPriority(int32 priority);
+									// negative priority is fine
 
 			bool				IsEmpty() const;
 			int32				CountPackages() const;
@@ -70,7 +71,7 @@ private:
 
 private:
 			BString				fName;
-			uint8				fPriority;
+			int32				fPriority;
 			bool				fIsInstalled;
 			PackageList			fPackages;
 			uint64				fChangeCount;

src/kits/package/solver/LibsolvSolver.cpp

@@ -588,7 +588,7 @@ LibsolvSolver::_AddRepositories()
 		Repo* repo = repo_create(fPool, repository->Name());
 		repositoryInfo->SetSolvRepo(repo);
 
-		repo->priority = 256 - repository->Priority();
+		repo->priority = -1 - repository->Priority();
 		repo->appdata = (void*)repositoryInfo;
 
 		int32 packageCount = repository->CountPackages();

src/kits/package/solver/SolverRepository.cpp

@@ -209,7 +209,7 @@ BSolverRepository::Name() const
 }
 
 
-uint8
+int32
 BSolverRepository::Priority() const
 {
 	return fPriority;
@@ -217,7 +217,7 @@ BSolverRepository::Priority() const
 
 
 void
-BSolverRepository::SetPriority(uint8 priority)
+BSolverRepository::SetPriority(int32 priority)
 {
 	fPriority = priority;
 	fChangeCount++;