text/template: reduce maxExecDepth for gccgo

    
    When using gccgo on systems without full support for split stacks a
    recursive template can overrun the available stack space.  Reduce the
    limit from 100000 to 10000 to make this less likely.  It's still high
    enough that real uses will work.
    
    Reviewed-on: https://go-review.googlesource.com/25467

From-SVN: r239141

gcc/go/gofrontend/MERGE

-ca5b64137f013e3104fd74ee7d07ba556a501187
+235dffb0de1e99d6f521f052067f0e936bf63baa
 
 The first line of this file holds the git revision number of the last
 merge done from the gofrontend repository.

libgo/go/text/template/exec.go

@@ -19,7 +19,9 @@ import (
 // templates. This limit is only practically reached by accidentally
 // recursive template invocations. This limit allows us to return
 // an error instead of triggering a stack overflow.
-const maxExecDepth = 100000
+// For gccgo we make this 10000 rather than 100000 to avoid stack overflow
+// on non-split-stack systems.
+const maxExecDepth = 10000
 
 // state represents the state of an execution. It's not part of the
 // template so that multiple executions of the same template