cs: use unsafe application after schemify

Since schemify adds its own checking for procedureness in an
application, always compile the application as unsafe at the Chez
Scheme level. This simple change saves about 5% in code size for
DrRacket, which is a 1-2% footprint saving overall.

pkgs/base/info.rkt

@@ -12,7 +12,7 @@
 
 (define collection 'multi)
 
-(define version "7.6.0.4")
+(define version "7.6.0.5")
 
 (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 13))
+  (values 9 5 3 14))
 
 (unless (guard (x [else #f]) (eval 'scheme-fork-version-number))
   (error 'compile-file

racket/src/cs/linklet.sls

@@ -1238,4 +1238,14 @@
 
   (enable-arithmetic-left-associative #t)
   (expand-omit-library-invocations #t)
-  (enable-error-source-expression #f))
+  (enable-error-source-expression #f)
+
+  ;; Since the schemify layer inserts `|#%app|` any time the rator of
+  ;; an application might not be a procedure, we can avoid redundant
+  ;; checks for other applications by enabling unsafe mode. But do that
+  ;; only if we're compiling the primitive layer in unsafe mode.
+  (meta-cond
+   [(>= (optimize-level) 3)
+    (enable-unsafe-application #t)]
+   [else
+    (void)]))

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 4
+#define MZSCHEME_VERSION_W 5
 
 /* A level of indirection makes `#` work as needed: */
 #define AS_a_STR_HELPER(x) #x