cs: sync with Chez Scheme change for trap check, again

We had to give back some space savings to avoid potential problems
with allocating in the event callback and running out of stack
space[?] when passing an argument. We get to keep most of the
improvement though.

pkgs/base/info.rkt

@@ -12,7 +12,7 @@
 
 (define collection 'multi)
 
-(define version "7.6.0.10")
+(define version "7.6.0.11")
 
 (define deps `("racket-lib"
                ["racket" #:version ,version]))

racket/src/cs/compile-file.ss

@@ -2,7 +2,7 @@
 ;; Check to make we're using a build of Chez Scheme
 ;; that has all the features we need.
 (define-values (need-maj need-min need-sub need-dev)
-  (values 9 5 3 18))
+  (values 9 5 3 19))
 
 (unless (guard (x [else #f]) (eval 'scheme-fork-version-number))
   (error 'compile-file

racket/src/racket/src/schvers.h

@@ -16,7 +16,7 @@
 #define MZSCHEME_VERSION_X 7
 #define MZSCHEME_VERSION_Y 6
 #define MZSCHEME_VERSION_Z 0
-#define MZSCHEME_VERSION_W 10
+#define MZSCHEME_VERSION_W 11
 
 /* A level of indirection makes `#` work as needed: */
 #define AS_a_STR_HELPER(x) #x