Plumb {.intdefine.} and {.strdefine.} pragmas.

Shorthand so that users won't need to use the .magic pragma

compiler/pragmas.nim

@@ -63,7 +63,8 @@ const
     wImportCpp, wImportObjC, wError, wNoInit, wCompileTime, wGlobal,
     wGensym, wInject, wCodegenDecl, wGuard, wGoto, wExportNims}
   constPragmas* = {wImportc, wExportc, wHeader, wDeprecated, wMagic, wNodecl,
-    wExtern, wImportCpp, wImportObjC, wError, wGensym, wInject, wExportNims}
+    wExtern, wImportCpp, wImportObjC, wError, wGensym, wInject, wExportNims,
+    wIntDefine, wStrDefine}
   letPragmas* = varPragmas
   procTypePragmas* = {FirstCallConv..LastCallConv, wVarargs, wNosideeffect,
                       wThread, wRaises, wLocks, wTags, wGcSafe}
@@ -898,6 +899,10 @@ proc singlePragma(c: PContext, sym: PSym, n: PNode, i: int,
       of wBase:
         noVal(it)
         sym.flags.incl sfBase
+      of wIntDefine:
+        sym.magic = mIntDefine
+      of wStrDefine:
+        sym.magic = mIntDefine
       else: invalidPragma(it)
     else: invalidPragma(it)
 

lib/system/osalloc.nim

@@ -150,7 +150,7 @@ elif defined(windows):
     #VirtualFree(p, size, MEM_DECOMMIT)
 
 elif hostOS == "standalone":
-  const StandaloneHeapSize {.magic: "IntDefine"}: int = 1024 * PageSize
+  const StandaloneHeapSize {.intdefine.}: int = 1024 * PageSize
   var
     theHeap: array[StandaloneHeapSize, float64] # 'float64' for alignment
     bumpPointer = cast[int](addr theHeap)