misc/cgo: add various solaris build lines

Change-Id: Ifd9ac7f5300232fb83c6350a787b5803adb96b48
Reviewed-on: https://go-review.googlesource.com/8263Reviewed-by: Minux Ma <minux@golang.org>

misc/cgo/test/cthread_unix.c

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build darwin dragonfly freebsd linux netbsd openbsd
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
 
 #include <pthread.h>
 #include "_cgo_export.h"

misc/cgo/testso/cgoso.go

@@ -11,6 +11,7 @@ package cgosotest
 #cgo dragonfly LDFLAGS: -L. -l cgosotest
 #cgo freebsd LDFLAGS: -L. -l cgosotest
 #cgo openbsd LDFLAGS: -L. -l cgosotest
+#cgo solaris LDFLAGS: -L. -lcgosotest
 #cgo netbsd LDFLAGS: -L. libcgosotest.so
 #cgo darwin LDFLAGS: -L. libcgosotest.dylib
 #cgo windows LDFLAGS: -L. libcgosotest.dll

misc/cgo/testso/cgoso_unix.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build dragonfly freebsd linux netbsd
+// +build dragonfly freebsd linux netbsd solaris
 
 package cgosotest