re PR ada/50589 ([4.7] Ada bootstrap failure on sparc-linux)

	PR ada/50589
	* s-linux-alpha.ads: Do not "with" Interfaces.C.
	* s-linux-sparc.ads: Likewise.

From-SVN: r179911

gcc/ada/ChangeLog

+2011-10-13  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR ada/50589
+	* s-linux-alpha.ads: Do not "with" Interfaces.C.
+	* s-linux-sparc.ads: Likewise.
+
 2011-10-13  Geert Bosch  <bosch@adacore.com>
 
 	* s-gearop.ads (Forward_Eliminate): Add "abs" formal function

gcc/ada/s-linux-alpha.ads

@@ -35,8 +35,6 @@
 --  PLEASE DO NOT add any with-clauses to this package or remove the pragma
 --  Preelaborate. This package is designed to be a bottom-level (leaf) package.
 
-with Interfaces.C;
-
 package System.Linux is
    pragma Preelaborate;
 

gcc/ada/s-linux-sparc.ads

@@ -35,8 +35,6 @@
 --  PLEASE DO NOT add any with-clauses to this package or remove the pragma
 --  Preelaborate. This package is designed to be a bottom-level (leaf) package
 
-with Interfaces.C;
-
 package System.Linux is
    pragma Preelaborate;