Make LibSolv a mandatory package

... so it is actually installed on the image.

build/jam/OptionalBuildFeatures

@@ -215,7 +215,7 @@ if $(HAIKU_BUILD_FEATURE_TAGLIB) {
 }
 
 
-# libsolv
+# LibSolv
 
 if $(TARGET_ARCH) != x86 {
 	Echo "Libsolv not available for $(TARGET_ARCH)." ;

build/jam/OptionalPackageDependencies

@@ -36,4 +36,4 @@ OptionalPackageDependencies WebPositive : Curl LibXML2 SQLite ;
 OptionalPackageDependencies wpa_supplicant : OpenSSL ;
 OptionalPackageDependencies XZ-Utils : Tar ;
 
-OptionalPackageDependencies MandatoryPackages : ICU Sed Tar ;
+OptionalPackageDependencies MandatoryPackages : ICU LibSolv Sed Tar ;

build/jam/OptionalPackages

@@ -44,6 +44,7 @@
 #	LibIconv				- text encoding conversion library
 #	LibLayout				- GCC2 package needed by some BeOS apps to compile
 #	Libmng					- mng support library
+#	LibSolv					- package dependency solver library
 #	LibXML2					- the XML support library
 #	LibXSLT					- xslt library and utility
 #	Links					- the web browser
@@ -918,6 +919,18 @@ if [ IsOptionalHaikuImagePackageAdded Libmng ] {
 }
 
 
+# LibSolv
+if [ IsOptionalHaikuImagePackageAdded LibSolv ] {
+	if ! $(HAIKU_LIBSOLV_PACKAGE) {
+		Echo "No optional package LibSolv available for $(TARGET_ARCH)" ;
+	} else {
+		InstallOptionalHaikuImagePackage $(HAIKU_LIBSOLV_PACKAGE)
+			: $(hpkgBaseURL)/$(HAIKU_LIBSOLV_PACKAGE)
+			: system packages ;
+	}
+}
+
+
 # LibXML2
 if [ IsOptionalHaikuImagePackageAdded LibXML2 ] {
 	if $(TARGET_ARCH) != x86 {