fix build, update private headers

need to inform these apps that the location of about window has changed,
I must have had stale objects that made it appear to work initially.

src/apps/activitymonitor/Jamfile

@@ -1,6 +1,6 @@
 SubDir HAIKU_TOP src apps activitymonitor ;
 
-UsePrivateHeaders shared system ;
+UsePrivateHeaders interface system ;
 
 Application ActivityMonitor :
 	ActivityMonitor.cpp

src/apps/deskcalc/Jamfile

@@ -2,7 +2,7 @@ SubDir HAIKU_TOP src apps deskcalc ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-UsePrivateHeaders shared ;
+UsePrivateHeaders interface shared ;
 
 Application DeskCalc :
 	CalcApplication.cpp

src/apps/diskprobe/Jamfile

@@ -2,7 +2,7 @@ SubDir HAIKU_TOP src apps diskprobe ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-UsePrivateHeaders shared ;
+UsePrivateHeaders interface shared ;
 
 Application DiskProbe :
 	DiskProbe.cpp

src/apps/networkstatus/Jamfile

@@ -2,7 +2,7 @@ SubDir HAIKU_TOP src apps networkstatus ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-UsePrivateHeaders net shared ;
+UsePrivateHeaders interface net ;
 UseLibraryHeaders agg ;
 
 local icon_libs ;

src/apps/powerstatus/Jamfile

@@ -2,7 +2,7 @@ SubDir HAIKU_TOP src apps powerstatus ;
 
 SetSubDirSupportedPlatformsBeOSCompatible ;
 
-UsePrivateHeaders shared ;
+UsePrivateHeaders interface shared ;
 UsePrivateSystemHeaders ;
 
 Application PowerStatus :

src/apps/processcontroller/Jamfile

@@ -1,7 +1,7 @@
 SubDir HAIKU_TOP src apps processcontroller ;
 
 UsePrivateSystemHeaders ;
-UsePrivateHeaders app shared ;
+UsePrivateHeaders app interface ;
 
 Application ProcessController :
 	AutoIcon.cpp

src/apps/webpositive/Jamfile

@@ -64,7 +64,7 @@ for architectureObject in [ MultiArchSubDirSetup ] {
 
 		# private OS headers
 		UseLibraryHeaders icon ;
-		UsePrivateHeaders shared tracker ;
+		UsePrivateHeaders interface shared tracker ;
 		SubDirHdrs $(HAIKU_TOP) src kits tracker ;
 
 		Application WebPositive :

src/preferences/locale/Jamfile

@@ -1,7 +1,6 @@
 SubDir HAIKU_TOP src preferences locale ;
 
-UsePrivateHeaders locale ;
+UsePrivateHeaders interface locale ;
-UsePrivateHeaders shared ;
 
 local sources =
 	LanguageListView.cpp