Rename WITHOUT_DMA into WITHOUT_DMAGENT to avoid confusion

Requested by:	ian

etc/Makefile

@@ -226,7 +226,7 @@ distribution:
 .endif
 	${_+_}cd ${.CURDIR}/defaults; ${MAKE} install
 	${_+_}cd ${.CURDIR}/devd; ${MAKE} install
-.if ${MK_DMA} != "no"
+.if ${MK_DMAGENT} != "no"
 	${_+_}cd ${.CURDIR}/dma; ${MAKE} install
 .endif
 	${_+_}cd ${.CURDIR}/gss; ${MAKE} install

libexec/Makefile

@@ -49,7 +49,7 @@ _casper=	casper
 _comsat=	comsat
 .endif
 
-.if ${MK_DMA} != "no"
+.if ${MK_DMAGENT} != "no"
 _dma=		dma
 _dma-mbox-create=	dma-mbox-create
 .endif

share/mk/bsd.own.mk

@@ -271,7 +271,7 @@ __DEFAULT_YES_OPTIONS = \
     CTM \
     CXX \
     DICT \
-    DMA \
+    DMAGENT \
     DYNAMICROOT \
     ED_CRYPTO \
     EXAMPLES \
@@ -512,7 +512,7 @@ MK_GROFF:=	no
 .if ${MK_MAIL} == "no"
 MK_MAILWRAPPER:= no
 MK_SENDMAIL:=	no
-MK_DMA:=	no
+MK_DMAGENT:=	no
 .endif
 
 .if ${MK_NETGRAPH} == "no"

tools/build/mk/OptionalObsoleteFiles.inc

@@ -4307,7 +4307,7 @@ OLD_FILES+=usr/bin/svnsync
 OLD_FILES+=usr/bin/svnversion
 .endif
 
-.if ${MK_DMA} == no
+.if ${MK_DMAGENT} == no
 OLD_FILES+=usr/libexec/dma
 OLD_FILES+=usr/libexec/dma-mbox-create
 OLD_FILES+=usr/share/man/man8/dma.8.gz