[Ada] AI12-0411 Add "bool" to Interfaces.C

[Pierre-Marie de Rodat]

This AI got updated to remove some detected incompatibilities and
Interfaces.C.bool is now named Interfaces.C.C_bool.

Tested on x86_64-pc-linux-gnu, committed on trunk

gcc/ada/

        * libgnat/i-c.ads, libgnat/i-cexten.ads,
        libgnat/i-cexten__128.ads: bool renamed C_bool.
diff --git a/gcc/ada/libgnat/i-c.ads b/gcc/ada/libgnat/i-c.ads
--- a/gcc/ada/libgnat/i-c.ads
+++ b/gcc/ada/libgnat/i-c.ads
@@ -63,8 +63,8 @@ package Interfaces.C is
 
    --  Boolean type
 
-   type bool is new Boolean;
-   pragma Convention (C, bool);
+   type C_bool is new Boolean;
+   pragma Convention (C, C_bool);
 
    --  Floating-Point
 


diff --git a/gcc/ada/libgnat/i-cexten.ads b/gcc/ada/libgnat/i-cexten.ads
--- a/gcc/ada/libgnat/i-cexten.ads
+++ b/gcc/ada/libgnat/i-cexten.ads
@@ -56,7 +56,7 @@ package Interfaces.C.Extensions is
 
    --  C bool
 
-   subtype bool is Interfaces.C.bool;
+   subtype bool is Interfaces.C.C_bool;
 
    --  64-bit integer types
 


diff --git a/gcc/ada/libgnat/i-cexten__128.ads b/gcc/ada/libgnat/i-cexten__128.ads
--- a/gcc/ada/libgnat/i-cexten__128.ads
+++ b/gcc/ada/libgnat/i-cexten__128.ads
@@ -56,7 +56,7 @@ package Interfaces.C.Extensions is
 
    --  C bool
 
-   subtype bool is Interfaces.C.bool;
+   subtype bool is Interfaces.C.C_bool;
 
    --  64-bit integer types