Add MK_FILE and MK_SQLITE3

- MK_FILE will conditionalize building lib/libmagic and usr.bin/file
- MK_SQLITE3 will conditionalize building lib/libsqlite3, and will disable
  MK_SVN/MK_SVNLITE by proxy

share/mk/src.opts.mk

@@ -81,6 +81,7 @@ __DEFAULT_YES_OPTIONS = \
     EE \
     EXAMPLES \
     FDT \
+    FILE \
     FINGER \
     FLOPPY \
     FMTREE \
@@ -151,6 +152,7 @@ __DEFAULT_YES_OPTIONS = \
     SOURCELESS \
     SOURCELESS_HOST \
     SOURCELESS_UCODE \
+    SQLITE3 \
     SVNLITE \
     SYSCALL_COMPAT \
     SYSCONS \
@@ -327,6 +329,11 @@ MK_KERBEROS:=	no
 MK_AUTHPF:=	no
 .endif
 
+.if ${MK_SQLITE3} == "no"
+MK_SVN:=	no
+MK_SVNLITE:=	no
+.endif
+
 .if ${MK_TEXTPROC} == "no"
 MK_GROFF:=	no
 .endif

tools/build/options/WITHOUT_FILE

@@ -0,0 +1,4 @@
+.\" $FreeBSD$
+Set to not build
+.Xr file 1
+and related programs.

tools/build/options/WITHOUT_SQLITE3

@@ -0,0 +1,2 @@
+.\" $FreeBSD$
+Set to not build all sqlite3 applications and libraries.