Install dtrace.h and dependencies

This makes the minimum amount of changes to allow inclusion of dtrace.h
without all the solaris compatibility headers. Installing dtrace.h allows
compiling consumers of libdtrace (e.g. https://github.com/tmetsch/python-dtrace)
without requiring a copy of the source tree.
For python-dtrace I worked around this in tmetsch/python-dtrace@58019c9
but being able to build the library without installed sources would be
extremely useful.

Reviewed By:	gnn
Differential Revision: https://reviews.freebsd.org/D27884

cddl/lib/libdtrace/Makefile

@@ -64,6 +64,13 @@ FILES=		${DSRCS}
 FILESDIR=	/usr/lib/dtrace
 FILESMODE=	${NOBINMODE}
 
+INCSGROUPS=	INCS SYSINCS
+SYSINCSDIR=	${INCLUDEDIR}/sys
+INCS+=		${SRCTOP}/cddl/contrib/opensolaris/lib/libdtrace/common/dtrace.h
+SYSINCS+=	${SRCTOP}/sys/cddl/contrib/opensolaris/uts/common/sys/dtrace.h
+SYSINCS+=	${SRCTOP}/sys/cddl/contrib/opensolaris/uts/common/sys/ctf_api.h
+SYSINCS+=	${SRCTOP}/sys/cddl/contrib/opensolaris/uts/common/sys/ctf.h
+
 WARNS?=		1
 
 CFLAGS+= -DIN_BASE

sys/cddl/contrib/opensolaris/uts/common/sys/dtrace.h

@@ -49,10 +49,20 @@ extern "C" {
 
 #ifndef _ASM
 
-#include <sys/types.h>
+#include <sys/param.h>
+#include <sys/stdint.h>
 #ifdef _KERNEL
 #include <sys/endian.h>
 #endif
+#if !defined(IN_BASE) && !defined(_KERNEL)
+/* Compatibility types to allow including the CTF API */
+typedef unsigned int zoneid_t;
+typedef unsigned char uchar_t;
+typedef unsigned short ushort_t;
+typedef unsigned int uint_t;
+typedef unsigned long ulong_t;
+typedef int processorid_t;
+#else
 #include <sys/modctl.h>
 #include <sys/processor.h>
 #include <sys/cpuvar.h>
@@ -63,9 +73,9 @@ extern "C" {
 #include <sys/proc.h>
 #include <sys/types.h>
 #include <sys/ucred.h>
+#endif
 typedef int model_t;
 #include <sys/ctf_api.h>
-#include <sys/stdint.h>
 
 /*
  * DTrace Universal Constants and Typedefs