Various "requires" and "provides" fixes.

Mostly because of awk and findutils split out of main haiku package.

dev-libs/libevent/libevent-2.0.21.recipe

@@ -52,6 +52,7 @@ BUILD_PREREQUIRES="
 	cmd:aclocal
 	cmd:autoconf
 	cmd:automake
+	cmd:awk
 	cmd:gcc$secondaryArchSuffix
 	cmd:ld$secondaryArchSuffix
 	cmd:libtoolize

dev-qt/qtcore/qtcore-4.8.5.git.recipe

@@ -77,6 +77,8 @@ BUILD_PREREQUIRES="
 	cmd:g++$secondaryArchSuffix
 	cmd:ld$secondaryArchSuffix
 	cmd:perl
+	cmd:find
+	cmd:awk
 	"
 
 if [ "$targetArchitecture" = x86_gcc2 ];then

sys-apps/less/less-451.recipe

@@ -17,6 +17,8 @@ ARCHITECTURES="x86_gcc2 x86 x86_64"
 PROVIDES="
 	less = 451
 	cmd:less
+	cmd:lessecho
+	cmd:lesskey
 	"
 
 REQUIRES="

sys-devel/libtool/libtool-2.4.2.recipe

@@ -38,6 +38,7 @@ BUILD_PREREQUIRES="
 	cmd:aclocal
 	cmd:autoconf >= 2.62
 	cmd:autoheader >= 2.62
+	cmd:find
 	cmd:gcc
 	cmd:ld
 	cmd:make