Prepare new release.

* CHANGES:Update CHANGES file.
* CMakeLists.txt: Raise minimum required openvas-libraries from 9.0.2 to 9.03.
* INSTALL: Update documentation.

CHANGES

@@ -1,3 +1,34 @@
+SUMMARY OF RELEASE CHANGES FOR OPENVAS-SCANNER 5.1
+==================================================
+
+For detailed code changes, please visit
+ https://github.com/greenbone/openvas-scanner/commits/openvas-scanner-5.1
+or get the entire source code repository and view log history:
+$ git clone https://github.com/greenbone/openvas-scanner.git
+$ cd openvas-scanner && git checkout openvas-scanner-5.1 && git log
+
+
+openvas-scanner 5.1.3 (2018-08-29)
+
+This is the third maintenance release of the openvas-scanner 5.1 module
+for the Open Vulnerability Assessment System 9 (OpenVAS-9).
+
+Many thanks to everyone who has contributed to this release:
+Hani Benhabiles, Juan Jose Nicola, Timo Pollmeier, Jan-Oliver Wagner
+and Michael Wiegand.
+
+Main changes compared to 5.1.2:
+* An issue which caused the scanner host process to get stuck searching
+  for plugins has been addressed.
+* Dependency for openvas-libraries has been raised from 9.0.2 to 9.0.3.
+* Checking routines for tcp and udp required ports have been improved.
+* Handling of requests from manager during the plugin load up has been
+  improved.
+* Support to specify a regex-based mandatory key has been added.
+* New scanner option "time_between_request" has been added.
+* NVT metadata cleanup has been improved.
+
+
 openvas-scanner 5.1.2 (2018-03-07)
 
 This is the second maintenance release of the openvas-scanner 5.1 module

CMakeLists.txt

@@ -186,9 +186,9 @@ message ("-- Install prefix: ${CMAKE_INSTALL_PREFIX}")
 
 ## Dependency checks
 
-pkg_check_modules (LIBOPENVAS_NASL REQUIRED libopenvas_nasl>=9.0.2)
-pkg_check_modules (LIBOPENVAS_BASE REQUIRED libopenvas_base>=9.0.2)
-pkg_check_modules (LIBOPENVAS_MISC REQUIRED libopenvas_misc>=9.0.2)
+pkg_check_modules (LIBOPENVAS_NASL REQUIRED libopenvas_nasl>=9.0.3)
+pkg_check_modules (LIBOPENVAS_BASE REQUIRED libopenvas_base>=9.0.3)
+pkg_check_modules (LIBOPENVAS_MISC REQUIRED libopenvas_misc>=9.0.3)
 pkg_check_modules (GLIB REQUIRED glib-2.0>=2.32)
 
 message (STATUS "Looking for libgcrypt...")

INSTALL

@@ -11,7 +11,7 @@ Prerequisites for openvas-scanner
 
 Prerequisites:
 * cmake >= 2.8
-* libopenvas_nasl, libopenvas_base, libopenvas_misc >= 9.0.2
+* libopenvas_nasl, libopenvas_base, libopenvas_misc >= 9.0.3
 * glib-2.0 >= 2.32
 * libgcrypt
 * pkg-config