rx_tools: new port

rx_fm, rx_power, and rx_sdr tools for receiving data from SDRs using
SoapySDR

science/rx_tools/Portfile

@@ -0,0 +1,24 @@
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:filetype=tcl:et:sw=4:ts=4:sts=4
+
+PortSystem          1.0
+PortGroup           github 1.0
+PortGroup           cmake 1.1
+
+platforms           darwin macosx
+categories          science
+license             MIT
+maintainers         {@ra1nb0w irh.it:rainbow} openmaintainer
+
+description         rx_fm, rx_power, and rx_sdr tools for \
+    receiving data from SDRs using SoapySDR
+long_description    ${description}
+
+github.setup        rxseger rx_tools 811b21c4c8a592515279bd19f7460c6e4ff0551c
+version             20190421-[string range ${github.version} 0 7]
+checksums           rmd160  be7ce358427be88112ba8c7a6f976fef3f5782ac \
+                    sha256  1c5037b7b204e184edb51151982cc1e4aab9293a6fff00445f37395f7b25586a \
+                    size    49248
+revision            0
+
+depends_lib-append \
+    port:SoapySDR